The The Wand Company has announced that the highly accurate die cast Ultra Ball replica is available to purchase as of September 1st, 2021. The Great Ball, Master Ball and Poké Ball were all released earlier this year. Images of this product have been added to an Imageboard thread.

ultraball

The Wand Company - Ultra Ball

Edition: Standard production – released initially in North America, mainland Europe, the UK, Australia, and New Zealand
Numbering: Uniquely numbered on display case base
Release date: 1st September 2021
Packaging: Full colour merchandising box over a protective EPS foam block Livery: Black and white painted shell decorated with distinctive yellow accent
Replica weight: 293 g (10.34 oz) with standard batteries fitted
Box contents: Ultra Ball, metallic silver Celebration Year presentation display case, polished stainless steel display ring (hidden in the bottom of the display case), illustrated manual, 3 x AA batteries installed in the display case, and 3 x AAA batteries installed inside the Great Ball.

Retailers: Available to buy now from these official retailers while stocks last.
United States: Amazon.com, Sideshow, Big Bad Toy Store
Europe: Zavvi, Derive Figurine, Loot Store and Yugen Collectibles
UK: Forbidden Planet
Australia: Mighty Ape
New Zealand: Mighty Ape
Ultra Ball: With its 2x catch rate modifier, its striking black, yellow, and white shell, the Ultra Ball Replica is a perfect addition to any Trainer’s Poké Ball collection.

Source: https://www.thewandcompany.com/pokeball/